US3961785A - Arrangement for respectively withdrawing a single film sheet from a stack of directly loosely superimposed film sheets - Google Patents

Arrangement for respectively withdrawing a single film sheet from a stack of directly loosely superimposed film sheets Download PDF

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Publication number
US3961785A
US3961785A US05/509,727 US50972774A US3961785A US 3961785 A US3961785 A US 3961785A US 50972774 A US50972774 A US 50972774A US 3961785 A US3961785 A US 3961785A
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US
United States
Prior art keywords
magazine
floor
withdrawal slot
film
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/509,727
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English (en)
Inventor
Arthur Gall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19732349097 external-priority patent/DE2349097C3/de
Application filed by Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of US3961785A publication Critical patent/US3961785A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/04—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
    • B65H1/06—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile for separation from bottom of pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/24—Separating articles from piles by pushers engaging the edges of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/423—Depiling; Separating articles from a pile
    • B65H2301/4232—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles
    • B65H2301/42322—Depiling; Separating articles from a pile of horizontal or inclined articles, i.e. wherein articles support fully or in part the mass of other articles in the piles from bottom of the pile

Definitions

  • the present invention relates to an arrangement for respectively withdrawing a single film sheet from a stack of directly loosely superimposed film sheets, particularly for use in X-ray filming apparatus, including a magazine for the film sheets, pressure means for pressing the stack of film sheets against the floor of the magazine, a withdrawal slot in a side wall of the magazine calibrated in the plane of the extreme film sheet introduced which is located on the floor of the magazine, and including transport means for the conveyance of the particular extreme film sheet positioned on the floor of the magazine through the withdrawal slot.
  • an X-ray filming installation which includes a supply magazine for receiving a stack of superpositioned loose film sheets, an engaging finger, which engages the particular extreme film sheet along an edge thereof, and removes the sheet by edging it from the stack.
  • This X-ray filming installation does not fully exclude the occasional withdrawal of two superimposed sheets which adhere to each other.
  • the floor of the magazine concurrently inventively forms the boundary edge of the calibrated withdrawal slot, while in the region of the edge of the extreme film sheet located on the floor which is remote from the withdrawal slot, the floor of the magazine has inserted a step roll having its axis extending in parallel to this edge.
  • the calibrated withdrawal slot forms an abutment for the second film sheet measured with respect to the step of a step wheel.
  • the two mutually adherent film sheets are insignificantly bent in view of the lack of stopping capability in the region of the set back floor at the withdrawal slot, so as to facilitate detachment of the extreme film sheet positioned on the floor from the second thereto adhering film sheet.
  • the calibrated withdrawal slot in the embodiment of the invention is approximately 1.5 film thickness wide measured perpendicular to the plane of the floor of the magazine. Although all widths of the withdrawal slot between one and two film thicknesses are possible, an optimum value is achieved at approximately 1.5 film thicknesses in which a second film sheet adhering to the outermost or extreme film sheet is held back with sufficient assurance and whereby, nevertheless, no scratching of the film surfaces occur at the withdrawal slot.
  • the frictional resistances may be reduced when, in a further embodiment of the invention, in lieu of the boundary edge of the floor of the magazine associated with the withdrawal slot, there is employed a roll.
  • a reduction in the friction signifies lower forces which are to be transmitted through the step roll, and finally thereby higher rates or frequencies of film sheet withdrawal.
  • the floor of the magazine may be scalloped out with the exception of small film sheet support surfaces extending in the withdrawing direction towards the withdrawal slot.
  • the floor of the magazine may be scalloped out with the exception of small film sheet support surfaces extending in the withdrawing direction towards the withdrawal slot.
  • FIG. 1 shows a sectional view of an inventive arrangement for the withdrawal of respectively a single film sheet from a stack of directly loosely superimposed film sheets;
  • FIG. 2 is an enlarged fragmentary sectional view generally showing the encircled portion II in FIG. 1;
  • FIG. 3 is a sectional view of the enlarged portion of FIG. 2 in an arrangement wherein a boundary edge of the withdrawal slot is formed by a roll.
  • an arrangement 1 for withdrawing single film sheets 2 from a stack of superimposed film sheets a magazine 5, which is closed by a cover 4, for receiving the stack of film sheets.
  • the film sheets in the magazine are pressed against the floor 8 of the magazine through a pressure plate 6 which is supported against the cover 4 of the magazine by the action of a compression spring 7.
  • a withdrawal slot 10 is provided in a side wall 9 of the magazine 5.
  • the floor 8 of the magazine 5 is provided with a window 11 in the side of the magazine located opposite to the withdrawal slot 10.
  • a step roll 12 projects into this window so as to lie against the edge of the extreme film sheet positioned directly on the floor of the magazine which is remote from the withdrawal slot 10.
  • the step roll with its axis 13 and its longitudinal steps 14, 15 is oriented in parallel to this edge of the film sheet.
  • the step roll 12 which consists of two screwed together roll halves, and which are mutually radially offset by an 0.8 film thickness, is rotated, through the intermediary of a motor drive 16, with the side facing towards the stack 3 of the film sheets, in a direction towards the withdrawal slot 10.
  • two motor driven conveyor rollers, 18, 19 which are pressed together by a spring 17, by means of which the film sheet 2, which has been conveyed through the withdrawal slot 10, is further transported.
  • the details of the calibrated withdrawal slot 10 may be more closely ascertained.
  • the floor 8 of the magazine which concurrently forms a boundary edge for the calibrated withdrawal slot 10
  • the extent of the set back may, for example, be about 10 mm.
  • the floor of the magazine is provided with a recess or scalloped portion 20, so that the film sheets in the embodiment of FIG. 2 have the edges thereof which extend perpendicular to the withdrawal slot 10, as well as those extending along the withdrawal slot, positioned on the floor 8 of the magazine.
  • the film sheets lie with their edges which are remote from the withdrawal slot in contact with the step roll 12.
  • the pressure plate 6, by means of rolls 21, 22 (only two illustrated), rests on the stack 3 of the film sheets, and which lie on the stack precisely opposite to the support surfaces for the film sheets on the floor 8 of the magazine in, respectively, the regions of the withdrawal slot 10 and the step roll 12.
  • the arrangement 1 is placed into operation through actuation of the drive 16 for the step roll 12.
  • the drive 16 may be an intermittent drive.
  • the peripheral velocity of the conveyor rolls is selected so as to be somewhat higher than the peripheral velocity of the step roll.
  • a second film sheet adheres to the extreme film sheet which located on the floor
  • upon contact by one of the steps of the step roll with the outermost or extreme film sheet due to impact of the adhering film sheet against the upper edge of the withdrawal slot 10 there is caused a buckling and reverse arching of both superimposed film sheets in the direction towards the floor 8 of the magazine.
  • This arching or curving which finds no resistance in proximity of the withdrawal slot due to the somewhat rearwardly displaced lower boundary edge for the withdrawal slot, leads to a curving and thereby displacement and spreading apart of both film sheets in the region of the withdrawal slot.
  • the magazine may be opened in a dark-room by sliding the cover 4 back, removing the pressure plate 6 together with the compression spring 7 which is fastened to the pressure plate, and may be refilled with a new stack of unexposed film sheets.
  • the magazine is again ready for operation.
  • FIG. 3 in an enlarged scale, illustrates a modification of the arrangement 1 of FIG. 1 in the region of withdrawal slot 23, in which the leading boundary edge of the floor 24 of the magazine adjacent the withdrawal slot has a roll 26 introduced therein.
  • This roll has the task of reducing the friction of the lowermost film sheet 27 which is to be removed with respect to the floor of the magazine 25, since for mutually adhering film sheets the increase in compressive force on these becomes considerable through the boundary edge of the withdrawal slot formed by the floor of the magazine, due to buckling of the adhering second film sheet 28 against the upper edge 29 of the calibrated withdrawal slot 23.
  • the step roll 26 By means of the roll 26 inserted in the floor so as to extend along the calibrated withdrawal slot, scratching of the film sheets is prevented at the calibrated withdrawal slot, as well as accomplishing a reduction in the frictional force which has to be overcome by the steps of the step roll. This finally leads to the result in that the step roll may run at a higher rotational speed, and to make possible higher frequencies of film sheet withdrawal.
  • the support surfaces for the film sheets, with their associated pressure means must be located in the conveying direction directly in front of each of these end regions, in which the withdrawal slot is calibrated.
  • the width of the calibrated portion of the withdrawal slot be made variable, for example, through adjusting means 30 for the supports of the roll 26 or connected to the floor 8 of the magazine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US05/509,727 1973-09-29 1974-09-26 Arrangement for respectively withdrawing a single film sheet from a stack of directly loosely superimposed film sheets Expired - Lifetime US3961785A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DT2349097 1973-09-29
DE19732349097 DE2349097C3 (de) 1973-09-29 Vorrichtung zur Entnahme jeweils eines einzelnen Filmblattes von einem Stapel aufeinanderliegender Filmblätter

Publications (1)

Publication Number Publication Date
US3961785A true US3961785A (en) 1976-06-08

Family

ID=5894130

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/509,727 Expired - Lifetime US3961785A (en) 1973-09-29 1974-09-26 Arrangement for respectively withdrawing a single film sheet from a stack of directly loosely superimposed film sheets

Country Status (2)

Country Link
US (1) US3961785A (fr)
FR (1) FR2245559B1 (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131208A (en) * 1977-08-03 1978-12-26 Container Corporation Of America Feed mechanism for carton blanks
US4257587A (en) * 1978-10-30 1981-03-24 Xerox Corporation Document registering and feeding apparatus
US4365793A (en) * 1979-11-06 1982-12-28 Oldelft Corporation Of America Sheet film feeder
US4538800A (en) * 1982-03-19 1985-09-03 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Printed copy separating and routing mechanism
WO1990002091A1 (fr) * 1988-08-26 1990-03-08 Datacard Corporation Appareil d'alimentation a tremie
US4915369A (en) * 1987-08-11 1990-04-10 Rutishauser Data Ag Apparatus for separating and feeding envelopes to an office machine
US5201510A (en) * 1991-03-05 1993-04-13 Siemens Aktiengesellschaft Sheet film magazine for a film changer
US5316284A (en) * 1991-07-03 1994-05-31 Minnesota Mining And Manufacturing Company Device for feeding single sheets out of a stack of film sheets
US5921543A (en) * 1997-05-07 1999-07-13 Lexmark International, Inc. Weight assembly for an envelope feeder
US5967504A (en) * 1997-08-15 1999-10-19 Data Pac Mailing Systems Corp. Envelope feeder
US20070080492A1 (en) * 2003-12-15 2007-04-12 Pfu Limited Paper supply apparatus
US20070158899A1 (en) * 2006-01-09 2007-07-12 Hui-Chun Ho Paper Storage Box Capable of Dispensing Paper Without User Contact
US20070296139A1 (en) * 2006-06-23 2007-12-27 Avision Inc. Energy storing sheet feeder
US20080216688A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Inverted Reverse-Image Transfer Printing
US20080216693A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Credential Production Device Having a Unitary Frame
US20080217841A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Card Holder for a Credential Production Device
US20080219735A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Printhead Assembly for a Credential Production Device
US20080216686A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Cantilevered Credential Processing Device Component
US20080217842A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Substrate Feeding in a Credential Production Device
US20080219739A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Credential Production Print Ribbon and Transfer Ribbon Cartridges
US20110049788A1 (en) * 2008-01-18 2011-03-03 Toshihiko Suzuki Paper sheet handling machine
US20130292405A1 (en) * 2012-05-04 2013-11-07 Saint-Fun International Ltd. Card vending machine
US8730283B2 (en) 2009-09-18 2014-05-20 Assa Abloy Ab Credential substrate feeding in a credential processing device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150438U (fr) * 1986-03-17 1987-09-24

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1680863A (en) * 1924-11-07 1928-08-14 Tabulating Machine Co Card-feeding device
US3290042A (en) * 1964-12-24 1966-12-06 Ibm Card feeding mechanism
US3575410A (en) * 1967-09-20 1971-04-20 Ricoh Kk Automatic card feeding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1680863A (en) * 1924-11-07 1928-08-14 Tabulating Machine Co Card-feeding device
US3290042A (en) * 1964-12-24 1966-12-06 Ibm Card feeding mechanism
US3575410A (en) * 1967-09-20 1971-04-20 Ricoh Kk Automatic card feeding device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
deStefano, E. J.; "Card Feed Bed Plate," IBM Technical Disclosure Bulletin, vol. 6, No. 4, Sept. 1963, p. 95. *

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131208A (en) * 1977-08-03 1978-12-26 Container Corporation Of America Feed mechanism for carton blanks
US4257587A (en) * 1978-10-30 1981-03-24 Xerox Corporation Document registering and feeding apparatus
US4365793A (en) * 1979-11-06 1982-12-28 Oldelft Corporation Of America Sheet film feeder
US4538800A (en) * 1982-03-19 1985-09-03 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Printed copy separating and routing mechanism
US4915369A (en) * 1987-08-11 1990-04-10 Rutishauser Data Ag Apparatus for separating and feeding envelopes to an office machine
US5009411A (en) * 1988-08-26 1991-04-23 Datacard Corporation Input hopper apparatus
WO1990002091A1 (fr) * 1988-08-26 1990-03-08 Datacard Corporation Appareil d'alimentation a tremie
US5201510A (en) * 1991-03-05 1993-04-13 Siemens Aktiengesellschaft Sheet film magazine for a film changer
US5316284A (en) * 1991-07-03 1994-05-31 Minnesota Mining And Manufacturing Company Device for feeding single sheets out of a stack of film sheets
US5921543A (en) * 1997-05-07 1999-07-13 Lexmark International, Inc. Weight assembly for an envelope feeder
US5967504A (en) * 1997-08-15 1999-10-19 Data Pac Mailing Systems Corp. Envelope feeder
US20070080492A1 (en) * 2003-12-15 2007-04-12 Pfu Limited Paper supply apparatus
US8636279B2 (en) * 2003-12-15 2014-01-28 Pfu Limited Paper supply apparatus
US20070158899A1 (en) * 2006-01-09 2007-07-12 Hui-Chun Ho Paper Storage Box Capable of Dispensing Paper Without User Contact
US20070296139A1 (en) * 2006-06-23 2007-12-27 Avision Inc. Energy storing sheet feeder
US20080217841A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Card Holder for a Credential Production Device
US20080216688A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Inverted Reverse-Image Transfer Printing
US20080219735A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Printhead Assembly for a Credential Production Device
US20080216686A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Cantilevered Credential Processing Device Component
US20080217842A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Substrate Feeding in a Credential Production Device
US20080219739A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Credential Production Print Ribbon and Transfer Ribbon Cartridges
US7665920B2 (en) * 2007-03-08 2010-02-23 Fargo Electronics, Inc. Card holder for a credential production device
US8834046B2 (en) 2007-03-08 2014-09-16 Assa Abloy Ab Inverted reverse-image transfer printing
US7922407B2 (en) 2007-03-08 2011-04-12 Hid Global Corporation Credential production print ribbon and transfer ribbon cartridges
US9180706B2 (en) 2007-03-08 2015-11-10 Assa Abloy Ab Cantilevered credential processing device component
US8845218B2 (en) 2007-03-08 2014-09-30 Assa Abloy Ab Credential production device having a unitary frame
US20080216693A1 (en) * 2007-03-08 2008-09-11 Fargo Electronics, Inc. Credential Production Device Having a Unitary Frame
CN101910033B (zh) * 2008-01-18 2014-05-07 光荣株式会社 纸张类处理装置
US8708327B2 (en) * 2008-01-18 2014-04-29 Glory Ltd. Paper sheet handling machine
US20110049788A1 (en) * 2008-01-18 2011-03-03 Toshihiko Suzuki Paper sheet handling machine
US8730283B2 (en) 2009-09-18 2014-05-20 Assa Abloy Ab Credential substrate feeding in a credential processing device
US20130292405A1 (en) * 2012-05-04 2013-11-07 Saint-Fun International Ltd. Card vending machine

Also Published As

Publication number Publication date
FR2245559B1 (fr) 1979-06-01
DE2349097A1 (de) 1975-04-17
FR2245559A1 (fr) 1975-04-25
DE2349097B2 (de) 1977-02-03

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